121021220212012 has 24 divisors (see below), whose sum is σ = 215122750599680. Its totient is φ = 59559044521680.

The previous prime is 121021220211923. The next prime is 121021220212031. The reversal of 121021220212012 is 210212022120121.

It is a super-2 number, since 2×121021220212012² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183086712 + ... + 183746527.

Almost surely, 2^{121021220212012} is an apocalyptic number.

It is an amenable number.

121021220212012 is a deficient number, since it is larger than the sum of its proper divisors (94101530387668).

121021220212012 is a wasteful number, since it uses less digits than its factorization.

121021220212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366834541 (or 366834539 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121021220212012 its reverse (210212022120121), we get a palindrome (331233242332133).

The spelling of 121021220212012 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred twenty million, two hundred twelve thousand, twelve".